Annular core heater



F. M. YOUNG ANNULAR GORE HEATER Oct. 28, 1941.

Filed Jan. 31, 1938 2 Sheets-Sheet l INVENTOR FRED M, You/v6 ATTORNEY Oct. 28, 1941. YOUNG 2,260,594

ANNULAR CORE HEATER I Filed Jan. 51, 1958 z'sqeets-sheet 2 INf E N TOR FRIED M You/v6 na F/e210 v I y A TTORNEY ably secured.

Patented Oct. 28. 1 941 UNITED STATES PATENT OFFICE- mum man 221 HEATER. I Fred M. Young'nlltacine, Wis. Application January 31, 1938, Serial No.187,82 2i 3 Claims. (01. est-137) The present invention relates to suspendeddescribed and claimed and shown in the accom-.. panying drawings in which:

Fig. 1 is a vertical sectionalview of my device taken on line of Figure 2.

Fig. 2 is a bottom view of my improved unit.

Fig. 3 is a top view of the complete core.

Fig. 4 is a fractional section taken on line 4-4 of Figure 3.

Fig. 5 is a fractional side view illustrating the header inlet and outlet-openings.

Fig. 6 illustrates fractionally a modification.

' Fig. 7 is a vertical sectional view of the headers of a modification.

Fig. 8 is a sectional view of one of the headersas shown in Figure '7 taken on line 88 of Figure 9.

Fig. 9 is asectional view of the inlet and outlet header taken on line's-9 of Figure 7. a Fig. 10 is'an enlarged vertical section of the hanger brackets shown in Figure 1. v

Fig. 11 illustrates amodification.

As thus illustrated, the motor is designated by reference character A and the fan by. reference character '3, the core comprises an inlet header 9 and an outlet header l0, each having screw threaded extensions H and i2, member ll generally acting as an inlet and' I2 the outlet for the core. means of suitable ears and a bolt l3 (see Figure 5), each header is preferably cast integral from suitable material providing header chambers ll-ll '(see Figure 4) and outer tube piates l5-|5 into which the ends of tubes I5 are suit- ,It will be noted in two vertical rows, each row having a'multiplicity of closely spaced strip fins |'I|1, these fins are similar but a larger number may be placed on the outer row of the tubes for an obvious purpose.

It will be noted by referring to Figure 5 that the fins and headers are of equal width, thus to The headers-are secured together by that the tubesare arranged.

nular retainer platesv 20 and 2t.

provide a suitable surface -for contact-with an- These plates are made to project slightly past the outer edge of the fins I! (see Figure 6) providing room forair noises.

' Plate '2| from its pointof contact with the fins is made in the shape of an inverted annular cone as at 24. Transversely in section, member 2| at 24 is formed in asingie curve and extends downwardly and inwardly to within a short distance of the motor shaft (see Figure 1). Thus air will becaused to enter the outer edge of the core as indicated by arrows in Figure 1 I and caused to move downwardly and inwardly by the vacuum created by the fan and the shape of member 2 I cushion support the unit preferably by means of two rods 25-25. I provide U shaped brackets 26, which are secured to plate 2|, each having an orifice and two composition washers 21-21. An 1 bolt 28' is provided having washers 29 and nuts 30-30 making upan assembly as clearly indicated in Figure 10 whereby the unit is cushion supported by means of bars 25 which I:

are hooked into members 28, .thus to prevent transfer of noisy vibrationsand to adequately insulate, the unit from its support. Y

tion being supported to member 2| by means of spaced brackets 38 which are preferably made from flat metal and placed edgewise to the direc-; tion of air flow.

v The motor A is cushion supported to member 2| in the following manner: Preferably four depressions 31 are formed in member 2| as clearly illustrated in Figure 1, each having a central orifice and being provided on oppositesides with composition rubber ,washers 38. The design is very similar to'that shown in Figure 10 whereby the motor is cushion held' snugly to the support through motor bolts 39. The housing 40 of motor A is provided with projections 4| having flat surfaces which rest onthe upper side of the :upper composition washers, thus when the bolts are made taut, the motor will be securely held into position whereby. there will be no metal contact betweenthe motor and .the unit, thus to prevent any, vibrational noises being conducted to plate 2|.

Plate 2| terminates a short distance from the motor shaft as at 42 as illustrated in Figure 1,

- thus there will be passage of a small volume of air over plate II to the fan through the opening 42 whereby the motor'will be adequately cooled and the temperatureabove the unit held to about the temperature of the room. As thusdesigned, member 2| and the fan blades only will'be subjected to heated air.

As thus illustrated, it will be noted that the heating or cooling liquid or gas may enter at inlet II and pass out ofthe core at I2. The eight tubes being connected in multiple.

- In Figures 7, 8 and 9, I illustrate a modification wherein the inlet and outlet connections are positioned-in one header only, this header bein designated by reference character 45 having a centrally positioned partition 46, the inlet above this partition being designated by reference numetal 41 and the outlet below the partition is designated by reference numeral 48.

Thus it will be seen that the heating or cooling liquid will be caused to enter the four .upper tubes and pass around the circle into header 49 and .then pass through this header as indicated by arrow in Figure '7 intothe four lower tubes of the core and then pass around the circle in the opposite direction into the header 45 below par- I may however, elect to,v make use of some other form of core, many of. whichare known tothe art, and while the present invention contemplates discharging the air downward, under some conditions I contemplate reversing the angle of the fan blades so as to discharge the air'radially.

- These and many other modifications may clearly be made without departing from the spirit and scope of my invention as'recited in the appended claims.

Having thus shown and described my preferred form of invention I claim:

1. A heat transfer device of the class described, comprising an annular core having means for' moving air radially therethrough, said core comprising two or more rows of tubes each row comprising a number of tubes in transverse alignment and each row of tubes having a multiplicityof closely spaced strip fins through which the tubes extend forming independent coresjand being positioned one within'the other, individual "headers to which the adjacent ends of said rows of tubes are operatively connected,-said headers at their adjacent sides being in juxtaposition, the

tition 48 and then be discharged atoutlet 48, the

length of travel of the heating or cooling medium is double to-that' shown in the other figures.

I may elect to still increase the length of travel through the core as indicated in Figure 11 by positioning partitions inthe headers as indicated,

thus as indicated by arrows the entering heating adjacent surfaces being at a considerable angle transversely to thereby provide narrow and wide oppositely positioned ends, inlet and outlet open ings in the wide ends ofeach header, projections" on adjacent sides of said headers having registering apertures, a bolt in said apertures whereby said headers may be securely bound together. v

2. A device as recited in claim 1 includin said headers being substantially the same length as saidfins, plates positioned on opposite sides of said cores and headers and havingnieans to firmly bind them therebetween.

or cooling medium will first pass from outlet 41 i v around the circle through-two tubes and then return through .the next two tubes from whence it will be caused to pass around the third row of tubes in the same direction as in the first row and then again be conducted around the circle I to outlet 48 thus the present design may be used for a single multiple connection through the tubes, a multiple series connection, or a series connection.

Clearly theprincipal objects of the present invention are to provide an annular core and means to eillciently heat the recirculated room air and discharge the air fan like toward the floor ofthe room, to maintain the room temperature above the unit and'to insulate against noise.

One of the advantages of the present invention is that each vertical row of tubes .is provided with individual fin strips, thus the fin strips on the outer row of tubes may be spaced the same as the fin strips on the inner row of tubes.

I have illustrated the preferred form of core.

3. A heat transfer device of the class described, comprising an annular core having means for moving air radially therethrough, said 'core com-- prising two or more rows of tubes eachrow comprising a number of tubes in transverse align-=- ment and each row of tubes having a multiplicity of closely spaced strip fins through which the tubes extend, forming separate cores, the cores -w being positioned one within the other, individual headers to which the adjacent ends of said rows of tubes are operatively connected, one of said headers having a transverse partition wall separating the tubes of each core in twogroups; inlet and outlet connections on opposite sides of said partition whereby the cooling or heating medium will be caused to travel "sinuously through said groups of tubes in series, said headers being substantially the same length as said fins, plates positioned on opposite sides of said cores and headers and having means to firmly bind them i therebetween FRED M. YOUNG. 

